4.4
Free
HexChat
It is like a free version of XChat for Windows
Your download will start automatically. If it doesn't, restart it.
A free program for mac, by YunWon Jeong
Index all your chats in a snap
Talk without limits
An encrypted and highly secretive Messenger app
Free and anonymous instant messaging service
A Free Communication program for Mac
A free app for Mac, by Sorenson Communications.
Videoconferencing client compatible with the CU-SeeMe protocol